Rotary printing machine



Sept. 11, 1934.

P. GANGLER ROTARY PRINTING MACHINE F11ed=Apri1 4, 1932 r m n H M- 6% N uR a a E *N .0. K v QM S k NW A k'nl -ll R m m m Q Q mm mwwwmk m, E I

" hum Patented Sept. 11, 1934 PATENT OFFICE ROTARY PRINTING MACHINE PaulGangler, Esslingen, Germany, minor to the firm Fr. Hesser,Maschinenfabrik-Aktiengesellschaft, Stuttgart-Cannstatt, GermanyApplication April 4, 1932, Serial No. 603,006 In Germany May 11, 1931 5Claims. (01. 101-248) My invention relates to rotary printing machines,and more particularly to an adjusting device for the peripheral orangular adjustment of the form or printing cylinder during the runningof the printing machine or press. The coupling of the form cylindershaft with the driving means rotatably mounted upon it, is eifected by acentrally adjustable coupling member which is operated by a memberadapted to be axially displaced within the shaft of the form cylinder.

According to my invention the adjustment of the central member takesplace by means of a sleeve adapted to slide but locked against rotation,and carrying a screw thread upon its periphery adapted to be engaged bya'wormwheel locked against displacement and to be turned from outside.

This adjusting device has the special advantage that it is self-stoppingand that it is therefore unnecessary to provide special locking means.The improved device enables, furthermore, an extremely easy adjustmentin every direction of running of the form cylinder.

An embodiment of my invention is shown by way of example in theaccompanying drawing, wherein:-

Fig. l is a vertical section through the two ends of a form cylinderprovided with my improved adjusting equipment,

Fig. 2 is a section through the coupling mechanism for adjusting theform cylinder peripherally,

Fig. 3 is a. front elevation of the adjusting mechanism and Fig. 4 is adetail.

Referring to the drawing, 1 is the tubular shaft upon which is mountedthe form cylinder 3 carrying the printing form 2. This shaft 1, whichhas one end extending beyond a bearing standard 4, is surrounded by asleeve 5 and isconnected with it by a pin 6. The end of the sleeve 5 isprovided with longitudinal slots '7. On the sleeve 5 is loosely mountedthe driving spur wheel 8 which might be rotated by any suitable means.The

sleeve 5 is also connected with or carries a spur wheel 28 of thegear-mechanism not illustrated in detail. The driving wheel 8 is rigidlyconnected with a second sleeve 9 surrounding the sleeve 5. The sleeve 9is provided with helical slots 10, see Figs. 1 and 4, positionedobliquely to the slots 7.

In the central bore of the shaft 1 is located an axially slidable rod ortraction member 11 provided at one end with a rigidly mounted crosshead12 engaging at opposite sides the helical slots 10 in the outer sleeve9, by means of pins ortrunnions 13, while the ends 12' of the cross-head12 itself engage the longitudinal slots 7 of the inner sleeve 5.

The two sleeves 5and 9, the spur wheel 8 and the shaft 1 are thuscoupled together by the crosshead 12 and the pins 13. By an axialdisplacement of the cross-head 12 a relative displacement of the sleeves5 and 9 is caused, due to the helical shape of the slots 10, and thus anadjustment of the form cylinder 3 mounted on the shaft 1 is effected inany direction of the periphery, to bring about the desired adjustment ofthe printing form 2.

The axial displacement of the rod 11 which carries the cross-head 12 andwhich is housed in the central bore of the shaft 1 is effected in thefollowing manner:

The right-hand end of the rod in Fig. 1 is journaled in a flangedbushing 14 in the interior of a sleeve 18. This sleeve 18 has itsperiphery provided with a screw thread and by means of a feather or key21 and a corresponding slot or keyway 22 is slid'ably but not rotatablyarranged in a housing 20 mounted on the machine frame. The screw threadof the sleeve 18 is engaged by the internal thread of a wormwheel 23adapted 30 to be rotated by means of a worm 24, the shaft of which wormprojects through the housing .20 and has its outer end provided with ahandwheel 25, Fig. 3.

If during the operation of the printing machine it is necessary toadjust the form cylinder peripherally in either direction, it is onlynecessary to turn the handwheel 25 in the proper direction, whereby thewormwheel 23 is screwed along the sleeve 18 by means of the worm,24,l'ongitudi-- nally displacing the sleeve 18, which is locked againstrotation by the feather 21 and slot 22. The sleeve 18 carries along therod 11 and this rod operates the mechanism shown at the left-hand sideof Fig. 1 and fully described above, which ef-- fects thecircumferential or peripheral adjustment proper of the printing or formcylinder upon its shaft.

It will be readily understood that various constructional changes andmodifications may .be made in the mechanism without departing from thespirit of the invention and the ambit of the appended claims. A

I claim as my invention:-

1. In a rotary printing press, comprising a form cylinder, a tubularshaft carrying the same and a driving member loosely mounted on saidshaft, the combination therewith of a traction member extending throughsaid tubular shaft, a coupling member in line with said shaft secured tosaid traction member adjacent one end thereof and connecting saidtubular shaft and driving member to each other, means adjacent the otherend of said traction member to move the latter axially, and meansincluding slotted sleeves mounted on said traction member and tubularshaft respectively, the slots in said sleeves crossing one another andbeing engaged by said coupling member to move the coupling member toperipherally adjust said tubular shaft and form cylinder.

2. In a rotary printing press, comprising a form cylinder, a tubularshaft carrying the same, a sleeve provided with slots secured to saidshaft, 9. second sleeve provided with slots loose on said firstmentioned sleeve and a driving member carried by said loose sleeve, theslots in said sleeves crossing one another the combination therewith ofa traction member extending through said tubular shaft, a couplingmember carried by said traction member adjacent one of its ends andhaving parts entering the slots in both sleeves to connect the tubularshaft and driving member to each other, means to axially move thetraction member and means including said slotted sleeves and theengaging coupling. member to move the coupling member to peripherallyadjust the tubular shaft and form cylinder.

3. In a' rotary printing press,,comprising a form cylinder, a tubularshaft carrying the same, a sleeve provided with longitudinal slotssecured to said shaft, a second sleeve provided with helical slots looseon said first mentioned sleeve and a driving member carried by saidloose sleeve, the combination therewith of a traction member extendingthe coupling member to rotate the tubular shaft and thus peripherallyadjust the form cylinder carried thereby.

4. In a rotary printing press, comprising a form cylinder, a tubularshaft carrying the same, a sleeve provided with longitudinal slotssecured to said shaft, a second sleeve provided with helical slots looseon said first mentioned sleeve and a driving member carried by saidloose sleeve, the combination therewith of an axially movable rodextending through said tubular shaft, a cross head at one end of saidrod, said cross head having parts of different diameters entering theslots in both sleeves to connect the tubular shaft and driving member toeach other, and means to axially move the traction member and with itthe cross head to rotate the tubular shaft and thus peripherally adjustthe form cylinder carried thereby.

5. In a rotary printing press, comprising a form cylinder, a tubularshaft carrying the same and a driving member looselymounted on saidshaft, a sleeve provided with slots secured to said shaft, thecombination therewith of a traction member extending through saidtubular shaft, a sleeve provided with slots secured to said tractionmember, the slots on said sleeves crossing one another, a couplingmember engaging said slot carried by said traction member adjacent oneend thereof and connecting through said sleeves said. tubular shaft anddriving member to each other, and means adjacent the other end of thetraction member to axially move the latter and with it the couplingmember, said means comprising a nonrotatable slidable externallythreaded sleeve con-- nected to said traction member, a rotatable wormwheel held against axial movement engaging the thread on the sleeve, andmeans for rotating the worm wheel.

PAUL GANGLER.

